Stencil circle cutter



sTENcIL CIRCLE CUTTER Filed Aug. 24, 1939 maia/m 'ngahr GHG/:M444 I Patented Mar.` 19, 1940 y fw- ,UNITED STATES PATENT oFF1cEI-,

2,194,409 STENCIL CIRCLE CUTTER William Stangohr, Missoula, Mont. Application August 24, 1939, Serial No. 291,770 3 claims.` (c1. 164-71) The present invention relates to a device for the action of the collar and screw I6, Bracket cutting circles especially in sand blast rubber, I1 is provided with a suitable knob I9.

although it may be used for cutting gaskets in n Reverting to the center bearing, it may 'conrubber, leather packing, linoleum and equivalent veniently be a disk or plate 20 having a plurality r. materials, generally. of spurs 2I depending therefrom and adapted 5 I especially provide a novel means whereby the for anchoring engagement with the material 2,2, device may be accurately swung on any desired to be out, and such as sand blast rubber, other center and will have efficient bearing so that the rubber, leather packing, linoleiun or the like. circle will be true, especially in sand blast rub- Such disk or plate 2Q has a central upstanding i ber. hub or bearing 23 with a bore 24 open through- 10 I further aim to provide a novel bearing or out.' center device for the cutter, having a portion to In using the device, a centering pin such as accommodate a centering pin upon which ity may 25, in Figure 6, is placed at the desired center on be located, and which portion serves as a bearing which the beam is adapted to swing, being i for the movable parts. capped if desired. While the centering pin 25 is 15 In addition, it is aimed to provide a novel in such position, the center bearing II. is enbeam or bar and mounting for the cutting ingaged with the pin 25 by sliding the center bearstrument. ing at its bore 2t downwardly on the pin to the The more spec-iiic objects and advantages will position of Figure 6, where the spurs 2l will enbecome apparent -from a consideration of the gage the material 22 andhold the center bearing 20 description following taken in connection with against rotation relatively to the material 22. accompanying drawing illustrating an operative Thereupon the pin is WithdraWn- TheellpOn, embodiment. l the beam I@ is disposed in operative position for In said drawingcutting, with a depending round stud 26, removl Figure 1 is a view of the implement or cutter ably occupying and journaled in the bore 24, so 25 in side elevation; that the beam Ill may then be swung over the Figure 2 is a plan view of the parteci Figure l; material 22, with the cutter i3 cutting the cir- Figure 3 is a vertical sectional view taken on 616,1 from the Vertical axis 0f 4bearing 23, as' a the line 3 3 of Figure l; center. V l :'.o Figure 4 is a vertical sectional view taken on The stud 26 maiT be applied 170 the beam I0 in 30 the line d-ll of Figure 2; any suitable manner. lIt preferably consists of Figure 5 is a vertical sectional View taken on a collar or slide 21, with which thestud is intethe line 5-5 of Figure' 2, and gral. Slide or collar 2l is movable to any ad- Figure 6 is a View partly in elevation and justed position along the beam Ill and is adapted' 5 partly in section, showing the use of the center to be fastened thereto by the binding action of 3 'bearing in connection with a centering pin. thefshank of a screw 28, threaded in the slide Referring specifically to the drawing wherein or collar 21. y like reference characters designate like or simi- Various changes may be resorted to provided lar parts, the device embodies a beam or bar of they fall within the spirit and scope of the i0 suitable length asat Illy which is adapted to be V invention. l

swung from the axis of a center bearing II. Such I claim as my invention:

bar has a vertical clasp or U-shaped portion at 1- In Combination, a plate, means on the plate I2 in the space of which a removable cutter I3 is t0 hold it nimvfjllle 'evaiiVe t0 engaged madisposed and which extends at its Cutting pop` terial, a bearing rising from said plate substantion Id, below the beam. v

A square or other clamping collar I5 removably surrounds the clasp I2 and has a screw Iii, ,threaded thelem and adapted for" bmdmg en' 'said bore, said cutter device including -Aa beam lgagement of 1ts shank against the clasp to sehaving an upwardly extending clasp, a cutter 50 @Wely clamp. the Cutter '3 m p laca l disposed in the clasp, a collar surrounding the An LShaped bracket 1s prow/@ed at n hal/mg clasp, a bracket having a portion extending into one arm i3 removably extendmghrough the the collar and against the clasp, and binding C0113? I5 and bearing aganSt the Clasp I2 S0 aS means on the collar operable to clamp the clasp to be clamped removably but rigidly in place by md bracket therein v l 55 tending completely therethrough, so that it may' be applied over a centering pin, a cutter device having a depending stud remcvablyjourna'led in tially centrally thereof and having a vbore exF I 2. A cutter of the class described including a' beam, means to pivotally mount the beam, `said beam having a vertical U-shaped portion formingv a clasp, a cutter Within the clasp, la bracket having a portion disposed against the clasp, a collar surrounding the clasp and adjacent portion of the bracket, and clamping means carried by the collar and engageable against the clasp.

3. In combination, a plate, means on the plate for penetration into engaged material to hold the plate immovable relatively to .the latter, a

bearing rising substantially centrally from said plate having a bore extending completely there-` through so that it may be applied over a centering pin, a stud removably journaled in said bore havinga portion resting on the top of the bearing, a beam mounted by said stud, said beam having an upwardly extending clasp, a cutterV disposed in the clasp, and means operable to bind a cutter in the clasp. f

WILLIAM .sfmNcoHaV 

